Abstract
We extend the parameters and generalize existing constructions of perfect autocorrelation sequences over complex alphabets. In particular, we address the PSK+ constellation (Boztaş and Udaya 10) and present an extended number theoretic criterion which is sufficient for the existence of the new sequences with perfect autocorrelation. These sequences are shown to exist for nonprime alphabets and more general lengths in comparison to existing designs. The new perfect autocorrelation sequences provide novel alternatives for wireless communications and radar system designers for applications in ranging and synchronisation as well as channel identification.
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Acknowledgements
Serdar Boztaş was partially supported by an Australian Department of Defence grant. Eda Tekin was supported by a grant from The Scientific and Technological Research Council of Turkey BIDEB 2214-A Program to visit RMIT University where part of this work was performed. We thank the reviewers for their suggestions which greatly improved the presentation of the paper.
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This article is part of the Topical Collection on Sequences and Their Applications.
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Boztaş, S., Özbudak, F. & Tekin, E. Generalized nonbinary sequences with perfect autocorrelation, flexible alphabets and new periods. Cryptogr. Commun. 10, 509–517 (2018). https://doi.org/10.1007/s12095-017-0237-6
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DOI: https://doi.org/10.1007/s12095-017-0237-6